Basically can't acquire any skills or collect books of knowledge without crashing the game.
It happened in previous versions as well but it didn't matter much since I already reached level 400 and had a few mastery points assigned, but at some point it broke. I can't acquire any of the new skills, can't revert any skill and reacquire it, basically can't interact with the skill tree, and I had all but one of the main game books of knowledge, the one in Wincestre garrison was missing, can't collect it, and now I can't even collect any of the new books of knowledge, so basically the river raids are pointless to me. I've already reported this and had my case elevated, but it was prior to this new update, now that there's new stuff to be done I feel like I'm doing it without a purpose.
Can't believe no one else has a similar experience, hard to get answers nevermind a fix if I'm the only one affected. It started happening so late in the game that it didn't bother much, at that point it was only mastery points and one ability upgrade, but now with new content and more coming I have to get this fixed.